Node Jimp | scale - GeeksforGeeks

Introduction
The scale() function is an inbuilt function in Nodejs | Jimp which uniformly scales the image by a factor.

Syntax:

scale(scale, mode, cb)

Parameter:

scale – This parameter stores the scaling factor of the image.
mode – This is optional parameter which stores the scaling method.
cb – This is optional parameter which is invoked when compilation is complete.

Input Images:

Example 1:

// npm install --save jimp 
// import jimp library to the environment 
var Jimp = require('jimp'); 
  
// User-Defined Function to read the images 
async function main() { 
  const image = await Jimp.read(' 
   https://media.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png'); 
// scale Function having scaling factor as 0.2 
  image.scale(.2) 
  .write('scale1.png'); 
} 
  
main(); 
  console.log('Image Processing Completed'); 

Output:

Example 2: With mode and cb (optional parameters)

// npm install --save jimp 
// import jimp library to the environment 
var Jimp = require('jimp'); 
  
// User-Defined Function to read the images 
async function main() { 
  const image = await Jimp.read(' 
   https://media.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png'); 
// scale Function having scaling-factor, mode and callback function 
  image.scale(3, Jimp.RESIZE_BEZIER, function(err){ 
    if (err) throw err; 
  }) 
  .write('scale2.png'); 
} 
  
main(); 
  console.log('Image Processing Completed'); 

Output:

Reference: https://www.npmjs.com/package/jimp

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